Exploring the relationships between interaction measures and learning outcomes through social network analysis: the mediating role of social presence

Table 3 Changes in density and reciprocity on weekly discussion boards

Class	Week 2 (Open-ended)	Week 3 (Case-based)	Week 5 (Case-based)	Week 6 (Pros/Cons)	Week 7 (Case-based)
Density
Class 1	0.171	0.188	0.158	0.129	0.129
Class 2	0.130	0.110	0.137	0.095	0.105
Class 3	0.135	0.139	0.117	0.094	0.103
Class 4	0.117	0.097	0.093	0.071	0.111
Reciprocity
Class 1	0.242	0.364	0.310	0.292	0.148
Class 2	0.468	0.426	0.627	0.288	0.451
Class 3	0.642	0.738	0.532	0.520	0.355
Class 4	0.577	0.388	0.300	0.282	0.418